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N0. 6I0,552. Patented Sept. I3, I898. J. T. MEATS &. T. W. DEAN. TWIST INDICATOR FOR SPINNING MACHINES.

(Application filed Jx ly 2, 1898.;

(No Model.)

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THE Norms rzrzns co, momu'ruou WASHINGTON, 11c

UNITED STATES PATENT OFFICE.

JOHN T. MEATS AND TRUMAN WV. DEAN, CF TAUNTON, MASSACHUSETTS, ASSIGNORS TO THE MASON MACHINE WORKS, OF SAME PLACE.

TWIST-INDICATOR FOR SPINNING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 610,552, dated September 13, 1898.

Application filed July 2, 1898. Serial No. 685,014. (No model.)

To all whom it may concern:

Be it known that we, JOHN T. MEATS and TRUMAN TV. DEAN, of Taunton, county of Bristol, State of Massachusetts, have invented an Improvement in Twist-Indicators for Spinning-Machines, of which the following description, in connect-ion with the accompanying drawings, is a specification, like letters and figures on the drawings representing like parts.

This invention has for its object the pro-.

duction of means for determining quickly and reliably the number of twists per inch which is put into the yarn being spun upon a spinhing-mule.

The spindles of a mule practically come to a standstill when the carriage is in at the roller-beam immediately after the winding operation has ceased and before the spinning 2o operation commences, and the spindles do not attain the maximum spinning speed until the carriage has gone some distance from the roller-beam on the outward draw. Again, the spindles again come gradually to a standstill before the backing off takes place at the outward end of the draw or stretch. These several facts have heretofore rendered it practically impossible to compute the number of revolutions which the spindles make during the draw or, in other words, what twist per inch is being put into the yarn. The usual speed-indicators as applied to the ends of spindles or shafts cannot be used for this purpose, for it has been found in actual prac- 3 5 tice impossible to make an indicator that will not slip to such an extent as to render an accurate result impossible, owing to the exceedingly high speed which the spindle attains in spinning fine numbers of yarn.

0 By our invention We have overcome the difficulties and objections referred to and we are enabled to attain accurate results with ease and rapidity.

Figure 1 represents in end elevation and partial section a suificient portion of a mulecarriage to be understood with our invention applied thereto, and Fig. 2 is a top or plan view thereof.

The frame A of the carriage, the spindle S,

broken off at its upper end and provided with a whirl s, the driving cylinder or drum C,

which imparts motion to the spindle by the endless band e and the drum -shaft C driven by suitable mechanism, (not shown,) may be and are all of usual or well-known construction in mule-spinning machines.

To the drum-shaft C is attached a worm D, which is adapted to at times engage and rotate a worm-gear cl, secured to or forming part of an upright shaft D having a lower end bearing in a block cl, pivoted at cl on a rocker-arm D, which latter is pivoted at its lower end at d to an ear a, attached to the frame A of the carriage. The rocker-arm may be swung toward or away from the worm D to effect engagement or disengagement of the worm and wormgear at by means of a pivotally-connected handle-bar D provided with notches 2 3, Fig. 1, one or other of which is adapted to engage a lug a on the carriageframe.

A dial-frame F is swiveled upon a horizontal stud f on the carriage-frame A, the dialframe having a bearing f for the upper end of the shaft D which is extended through the frame and provided with a pointer P, adapted to travel over the dial F and indicate the revolutions and parts of a revolution made by said shaft, and more particularly the number of spindle revolutions up to one hundred, as will be described. The swiveling of the dial-frame permits the movement of the shaft D to effect engagement or disengagementof the worm and worm-gear by the movement of the rocker-arm D, as described.

Upon the shaft D which is the transmitting member between the drum C and dialframe, is secured a pinion 9 below the bearing f, said pinion meshing with a gear g, supported by and rotatable on a stud g depending from the dial-frame. This gear g has an attached pinion 9 which transmits rotative movement to the indicator-gear g fast on a shaft 9 having a bearing in the 5 dial-frame and passing therethrough, the up per end of the shaft having fast upon it a pointer P, which travels over the face of the dial F Fig. 2, to indicate the number of hundreds of revolutions which the spindle S has made. The pinions g and g should have eighteen teeth each and the gear fifty-four teeth,

. begins its outward movement.

while the gear 9 should have sixty teeth in order to indicate the revolutions of the spindles, as hereinafter described. The number of revolutions made by the spindle divided by the length of the stretch or draw in inches gives the number of turns of twist per inch put into the yarn.

The drawings represent the parts with the worm D in mesh with the worm-gear d or in operative position, and in order to accurately ning part of the draw the indicating mechanism is thrown into operation by or through the handle D immediately after the carriage The mechanism is thrown out of operation immediately after the draw is completed and before the backing off begins. The pointers on the dialframe will then indicate the revolutions made by the spindles in the draw.

It will be obvious that there is no opportunity for slip or inaccurate movement of the indicator mechanism herein shown and described, and the said mechanism is always in position ready to be thrown into operation when it is desired to determine the twist being put into the yarn.

Relative to the indicating mechanism herein shown it is to be noted that it is desirable to attain thereby the final result as near as may be, and consequently an indicator showing only the revolutions of the drum would not be as satisfactory as one showing the revolutions of the spindle, thus leaving merely the division by the length of the stretch to obtain the twist per inch.

With the two dials, as herein illustrated, it will be supposed that we are spinning yarn having thirty-five turns of twist per inch, that the stretch or draw is sixty-seven inches,the diameter of the drum '0 six inches, and the whirl diameter three-fourths of one inchdimensions in accord with actual practice. If the worm D is double-threaded, driving the wormgear d of twenty-five teeth, then the drum makes twelve and one-half revolutions to one of the shaft D and as the whirl makes eight revolutions to one of the drum then 8 X 12%: 100 revolutions of the spindle for each 1 revolution of the pointer P. The dial-face F is therefore graduated up to 100, and the; other face F is similarly graduated; but

t I 1 s po1nte1 P 1s geared 54 units up to one hundred. ferred to, sixty seven inches stretch and thirty-five turns of twist'per inch, the face Fv would indicate 45 and the dial-face F would indicate 23, two thousand three hundred and forty-five being the number of turns of twist in one stretch. Dividing two thousand three hundred and forty-five by the num- Patent, is

1. In an apparatus of the class described, the spindle-driving drum having a worm rotatable therewith, speed-indicating mechanism, including a transmitting-shaft having an attached worm-gear, and means to throw said worm-gear and worm into or out of engagement.

2. In an apparatus of the class described, the spindle-driving drum having a worm rotatable therewith, pivotally-mounted speedindicating mechanism, including a transmitting-shaft having an attached worm-gear, a rocker-arm having an end bearing for said shaft pivoted upon it, and means to rock said arm to effect engagement or disengagement of said Worm-gear or worm.

3. In an apparatus of the class described, the spindle-driving drum having a worm rotatable therewith, a frame having two dials and cooperating pointers, a shaft mounted in the frame and to which one of said pointers is attached, gearing intermediate said shaft and the other pointer, to operate the latter, a worm-gear on said shaft, means to move said worm-gear into or out of engagement with the worm, and a locking device for said means.

4. In an apparatus of the class described, the mule-carriage provided with a spindledriving drum, a gear rotatable therewith, speed-indicatin g mechanism pi votally mounted on the carriage adjacent the drum, said mechanism including a transmitting-shaft having a gear thereon, means to effect en gagement or disengagement of said shaft and drum-gears, and 'alocking device for said 5. In an apparatus of the class described,

the spindle-driving drum having an attached worm, a dial and cooperating pointer, a shaft having a worm-gear, connections between said shaft and the pointer, to transmit rotation of the shaft to said pointer, and means to throw said worm and gear into or out of or 0' to make one; encacement' In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

JOHN T. MEATS. I TRUMAN W. DEAN.

Witnesses:

JAMES E. GREENSMITH, P. RUssELL BosWoRTH. 

